Detection algorithm implementation and measured results for a real-time, through-wall radar system using a TDM MIMO antenna array

Locating moving targets inside of buildings would greatly improve the situational awareness of the urban war fighter. A real-time, through-wall radar system was developed that plots the location (in down range and cross range) of moving targets at the video frame rate of 10.8 Hz behind an opaque wall. This is achieved by coupling an ultrawideband (UWB) S-band frequency modulated continuous wave (FMCW) radar, which uses a spatial frequency analog range gate, with a time division multiplexed (TDM) multiple-input multiple-output (MIMO) antenna array. Real-time imagery or detections are plotted on the radar screen, providing the war fighter with an immediate picture of the situation behind an unknown wall.